Question

100 POINTS EASIEST QUESTIONS THIS TIME NO JOKE LAST ONE

Answer 1

Answer:

24a ) $\frac{7}{8}$

24b) $1\frac{4}{5}$

17) 84 hours

Step-by-step explanation:

24a)     $\frac{1}{2} *\frac{3}{4} +\frac{3}{2} *\frac{1}{3}$

Using BIDMAS

B = Brackets

I = Indices

D = Division

M = Multiplication

A = Addition

S = Subtraction

⇒ The first step is multiplication so,

→   $\frac{1}{2} *\frac{3}{4} +\frac{3}{2} *\frac{1}{3}$    =     $\frac{3}{8} +\frac{3}{6}$    =    $\frac{3}{8} +\frac{3}{6} =\frac{9}{24} +\frac{12}{24} =\frac{21}{24} =\frac{7}{8}$

24b)    $1\frac{1}{2} / (1\frac{1}{2} -\frac{2}{3} )$  

⇒ The first step is the brackets so

→   $1\frac{1}{2} / (1\frac{1}{2} -\frac{2}{3} )$  =   $1\frac{1}{2} -\frac{2}{3} =1\frac{3}{6} -\frac{4}{6} =\frac{9}{6} -\frac{4}{6} =\frac{5}{6}$

⇒ Then we divide   $\frac{5}{6}$   by    $1\frac{1}{2}$

→ $1\frac{1}{2} / \frac{5}{6} =\frac{3}{2} /\frac{5}{6} =\frac{3}{2}*\frac{6}{5} =\frac{18}{10} =1\frac{8}{10} =1\frac{4}{5}$

17)   $3\frac{1}{2}$   = 3.5 days

1 day = 24 hours

0.5 days = 12 hours so,

( 24 × 3 ) + 12 = 72 + 12 = 84

Answer 2

Answer:

24. a) ⅞ b) 1⅘

17. 36

Step-by-step explanation:

24.

a) ½ × ¾ + 3/2 × ⅓

3/8 + 1/2

(3 + 4×1)/8

7/8

b) 1½ ÷ (1½ - ⅔)

3/2 ÷ (3/2 - 2/3)

3/2 ÷ (3×3 - 2×2)/6

3/2 ÷ 5/6

3/2 × 6/5

18/10

1 8/10

1⅘

17. 1 day = 24 hours

1.5 days = 1.5× 24= 36 hours